What is the class and phylum of human? What are other major classes in the same phylum? Enlist few distinguishing features of all these classes?

Humans are included in class Mammalia, phylum Chordata. Other classes under Phylum Chordata include Aves, Reptilia, Amphibia, Osteichthyes, Chondrichthyes, and another invertebrate (but chordate) classes. You may consider integumentary features to distinguish these classes and if we consider their skeletal system, we may find the following uniqueness and reproduction.